Simplify in-class initializer expressions

include/SFML/Graphics/Color.hpp

@@ -95,9 +95,9 @@ public:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    std::uint8_t r{0};   //!< Red component
-    std::uint8_t g{0};   //!< Green component
-    std::uint8_t b{0};   //!< Blue component
+    std::uint8_t r{};    //!< Red component
+    std::uint8_t g{};    //!< Green component
+    std::uint8_t b{};    //!< Blue component
     std::uint8_t a{255}; //!< Alpha (opacity) component
 };
 

include/SFML/Graphics/Font.hpp

@@ -339,7 +339,7 @@ private:
         {
         }
 
-        unsigned int width{0}; //!< Current width of the row
+        unsigned int width{}; //!< Current width of the row
         unsigned int top;     //!< Y position of the row into the texture
         unsigned int height;  //!< Height of the row
     };

include/SFML/Graphics/Glsl.inl

@@ -144,8 +144,8 @@ struct Vector4
         copyVector(color, *this);
     }
 
-    T x{0}; //!< 1st component (X) of the 4D vector
-    T y{0}; //!< 2nd component (Y) of the 4D vector
-    T z{0}; //!< 3rd component (Z) of the 4D vector
-    T w{0}; //!< 4th component (W) of the 4D vector
+    T x{}; //!< 1st component (X) of the 4D vector
+    T y{}; //!< 2nd component (Y) of the 4D vector
+    T z{}; //!< 3rd component (Z) of the 4D vector
+    T w{}; //!< 4th component (W) of the 4D vector
 };

include/SFML/Graphics/Glyph.hpp

@@ -44,9 +44,9 @@ public:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    float     advance{0};  //!< Offset to move horizontally to the next character
-    int       lsbDelta{0}; //!< Left offset after forced autohint. Internally used by getKerning()
-    int       rsbDelta{0}; //!< Right offset after forced autohint. Internally used by getKerning()
+    float     advance{};   //!< Offset to move horizontally to the next character
+    int       lsbDelta{};  //!< Left offset after forced autohint. Internally used by getKerning()
+    int       rsbDelta{};  //!< Right offset after forced autohint. Internally used by getKerning()
     FloatRect bounds;      //!< Bounding rectangle of the glyph, in coordinates relative to the baseline
     IntRect   textureRect; //!< Texture coordinates of the glyph inside the font's texture
 };

include/SFML/Graphics/Rect.hpp

@@ -127,10 +127,10 @@ public:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    T left{0};   //!< Left coordinate of the rectangle
-    T top{0};    //!< Top coordinate of the rectangle
-    T width{0};  //!< Width of the rectangle
-    T height{0}; //!< Height of the rectangle
+    T left{};   //!< Left coordinate of the rectangle
+    T top{};    //!< Top coordinate of the rectangle
+    T width{};  //!< Width of the rectangle
+    T height{}; //!< Height of the rectangle
 };
 
 ////////////////////////////////////////////////////////////

include/SFML/Graphics/RenderStates.hpp

@@ -113,8 +113,8 @@ public:
     ////////////////////////////////////////////////////////////
     BlendMode      blendMode{BlendAlpha}; //!< Blending mode
     Transform      transform;             //!< Transform
-    const Texture* texture{nullptr};      //!< Texture
-    const Shader*  shader{nullptr};       //!< Shader
+    const Texture* texture{};             //!< Texture
+    const Shader*  shader{};              //!< Shader
 };
 
 } // namespace sf

include/SFML/Graphics/RenderTarget.hpp

@@ -485,7 +485,7 @@ private:
         };
 
         bool          enable;                       //!< Is the cache enabled?
-        bool          glStatesSet{false};           //!< Are our internal GL states set yet?
+        bool          glStatesSet{};                //!< Are our internal GL states set yet?
         bool          viewChanged;                  //!< Has the current view changed since last draw?
         BlendMode     lastBlendMode;                //!< Cached blending mode
         std::uint64_t lastTextureId;                //!< Cached texture
@@ -500,7 +500,7 @@ private:
     View          m_defaultView; //!< Default view
     View          m_view;        //!< Current view
     StatesCache   m_cache;       //!< Render states cache
-    std::uint64_t m_id{0};       //!< Unique number that identifies the RenderTarget
+    std::uint64_t m_id{};        //!< Unique number that identifies the RenderTarget
 };
 
 } // namespace sf

include/SFML/Graphics/RenderWindow.hpp

@@ -165,7 +165,7 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    unsigned int m_defaultFrameBuffer{0}; //!< Framebuffer to bind when targeting this window
+    unsigned int m_defaultFrameBuffer{}; //!< Framebuffer to bind when targeting this window
 };
 
 } // namespace sf

include/SFML/Graphics/Shader.hpp

@@ -698,7 +698,7 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    unsigned int m_shaderProgram{0};   //!< OpenGL identifier for the program
+    unsigned int m_shaderProgram{};    //!< OpenGL identifier for the program
     int          m_currentTexture{-1}; //!< Location of the current texture in the shader
     TextureTable m_textures;           //!< Texture variables in the shader, mapped to their location
     UniformTable m_uniforms;           //!< Parameters location cache

include/SFML/Graphics/Shape.hpp

@@ -303,11 +303,11 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    const Texture* m_texture{nullptr};           //!< Texture of the shape
+    const Texture* m_texture{};                  //!< Texture of the shape
     IntRect        m_textureRect;                //!< Rectangle defining the area of the source texture to display
     Color          m_fillColor{Color::White};    //!< Fill color
     Color          m_outlineColor{Color::White}; //!< Outline color
-    float          m_outlineThickness{0};        //!< Thickness of the shape's outline
+    float          m_outlineThickness{};         //!< Thickness of the shape's outline
     VertexArray    m_vertices{PrimitiveType::TriangleFan};          //!< Vertex array containing the fill geometry
     VertexArray    m_outlineVertices{PrimitiveType::TriangleStrip}; //!< Vertex array containing the outline geometry
     FloatRect      m_insideBounds;                                  //!< Bounding rectangle of the inside (fill)

include/SFML/Graphics/Sprite.hpp

@@ -214,7 +214,7 @@ private:
     // Member data
     ////////////////////////////////////////////////////////////
     Vertex         m_vertices[4]; //!< Vertices defining the sprite's geometry
-    const Texture* m_texture{nullptr}; //!< Texture of the sprite
+    const Texture* m_texture{};   //!< Texture of the sprite
     IntRect        m_textureRect; //!< Rectangle defining the area of the source texture to display
 };
 

include/SFML/Graphics/Text.hpp

@@ -428,7 +428,7 @@ private:
     // Member data
     ////////////////////////////////////////////////////////////
     String                m_string;                                    //!< String to display
-    const Font*           m_font{nullptr};                             //!< Font used to display the string
+    const Font*           m_font{};                                    //!< Font used to display the string
     unsigned int          m_characterSize{30};                         //!< Base size of characters, in pixels
     float                 m_letterSpacingFactor{1.f};                  //!< Spacing factor between letters
     float                 m_lineSpacingFactor{1.f};                    //!< Spacing factor between lines
@@ -439,8 +439,8 @@ private:
     mutable VertexArray   m_vertices{PrimitiveType::Triangles};        //!< Vertex array containing the fill geometry
     mutable VertexArray   m_outlineVertices{PrimitiveType::Triangles}; //!< Vertex array containing the outline geometry
     mutable FloatRect     m_bounds;               //!< Bounding rectangle of the text (in local coordinates)
-    mutable bool          m_geometryNeedUpdate{false}; //!< Does the geometry need to be recomputed?
-    mutable std::uint64_t m_fontTextureId{0};          //!< The font texture id
+    mutable bool          m_geometryNeedUpdate{}; //!< Does the geometry need to be recomputed?
+    mutable std::uint64_t m_fontTextureId{};      //!< The font texture id
 };
 
 } // namespace sf

include/SFML/Graphics/Texture.hpp

@@ -612,13 +612,13 @@ private:
     ////////////////////////////////////////////////////////////
     Vector2u      m_size;            //!< Public texture size
     Vector2u      m_actualSize;      //!< Actual texture size (can be greater than public size because of padding)
-    unsigned int  m_texture{0};           //!< Internal texture identifier
-    bool          m_isSmooth{false};      //!< Status of the smooth filter
-    bool          m_sRgb{false};          //!< Should the texture source be converted from sRGB?
-    bool          m_isRepeated{false};    //!< Is the texture in repeat mode?
-    mutable bool  m_pixelsFlipped{false}; //!< To work around the inconsistency in Y orientation
-    bool          m_fboAttachment{false}; //!< Is this texture owned by a framebuffer object?
-    bool          m_hasMipmap{false};     //!< Has the mipmap been generated?
+    unsigned int  m_texture{};       //!< Internal texture identifier
+    bool          m_isSmooth{};      //!< Status of the smooth filter
+    bool          m_sRgb{};          //!< Should the texture source be converted from sRGB?
+    bool          m_isRepeated{};    //!< Is the texture in repeat mode?
+    mutable bool  m_pixelsFlipped{}; //!< To work around the inconsistency in Y orientation
+    bool          m_fboAttachment{}; //!< Is this texture owned by a framebuffer object?
+    bool          m_hasMipmap{};     //!< Has the mipmap been generated?
     std::uint64_t m_cacheId;         //!< Unique number that identifies the texture to the render target's cache
 };
 

include/SFML/Graphics/VertexBuffer.hpp

@@ -333,8 +333,8 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    unsigned int  m_buffer{0};                            //!< Internal buffer identifier
-    std::size_t   m_size{0};                              //!< Size in Vertexes of the currently allocated buffer
+    unsigned int  m_buffer{};                             //!< Internal buffer identifier
+    std::size_t   m_size{};                               //!< Size in Vertexes of the currently allocated buffer
     PrimitiveType m_primitiveType{PrimitiveType::Points}; //!< Type of primitives to draw
     Usage         m_usage{Stream};                        //!< How this vertex buffer is to be used
 };

include/SFML/Graphics/View.hpp

@@ -241,8 +241,8 @@ private:
     FloatRect m_viewport{{0, 0}, {1, 1}};   //!< Viewport rectangle, expressed as a factor of the render-target's size
     mutable Transform m_transform;          //!< Precomputed projection transform corresponding to the view
     mutable Transform m_inverseTransform;   //!< Precomputed inverse projection transform corresponding to the view
-    mutable bool      m_transformUpdated{false}; //!< Internal state telling if the transform needs to be updated
-    mutable bool m_invTransformUpdated{false}; //!< Internal state telling if the inverse transform needs to be updated
+    mutable bool      m_transformUpdated{}; //!< Internal state telling if the transform needs to be updated
+    mutable bool      m_invTransformUpdated{}; //!< Internal state telling if the inverse transform needs to be updated
 };
 
 } // namespace sf

include/SFML/Network/Http.hpp

@@ -328,8 +328,8 @@ public:
         ////////////////////////////////////////////////////////////
         FieldTable   m_fields;                           //!< Fields of the header
         Status       m_status{Status::ConnectionFailed}; //!< Status code
-        unsigned int m_majorVersion{0};                  //!< Major HTTP version
-        unsigned int m_minorVersion{0};                  //!< Minor HTTP version
+        unsigned int m_majorVersion{};                   //!< Major HTTP version
+        unsigned int m_minorVersion{};                   //!< Minor HTTP version
         std::string  m_body;                             //!< Body of the response
     };
 
@@ -411,7 +411,7 @@ private:
     TcpSocket                m_connection; //!< Connection to the host
     std::optional<IpAddress> m_host;       //!< Web host address
     std::string              m_hostName;   //!< Web host name
-    unsigned short           m_port{0};    //!< Port used for connection with host
+    unsigned short           m_port{};     //!< Port used for connection with host
 };
 
 } // namespace sf

include/SFML/Network/Packet.hpp

@@ -432,8 +432,8 @@ private:
     // Member data
     ////////////////////////////////////////////////////////////
     std::vector<char> m_data;          //!< Data stored in the packet
-    std::size_t       m_readPos{0};    //!< Current reading position in the packet
-    std::size_t       m_sendPos{0};    //!< Current send position in the packet (for handling partial sends)
+    std::size_t       m_readPos{};     //!< Current reading position in the packet
+    std::size_t       m_sendPos{};     //!< Current send position in the packet (for handling partial sends)
     bool              m_isValid{true}; //!< Reading state of the packet
 };
 

include/SFML/Network/TcpSocket.hpp

@@ -218,8 +218,8 @@ private:
     ////////////////////////////////////////////////////////////
     struct PendingPacket
     {
-        std::uint32_t     Size{0};         //!< Data of packet size
-        std::size_t       SizeReceived{0}; //!< Number of size bytes received so far
+        std::uint32_t     Size{};         //!< Data of packet size
+        std::size_t       SizeReceived{}; //!< Number of size bytes received so far
         std::vector<char> Data;           //!< Data of the packet
     };
 

include/SFML/System/Angle.hpp

@@ -160,7 +160,7 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    float m_degrees{0}; //!< Angle value stored as degrees
+    float m_degrees{}; //!< Angle value stored as degrees
 };
 
 ////////////////////////////////////////////////////////////

include/SFML/System/MemoryInputStream.hpp

@@ -104,9 +104,9 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    const char*  m_data{nullptr}; //!< Pointer to the data in memory
-    std::int64_t m_size{0};       //!< Total size of the data
-    std::int64_t m_offset{0};     //!< Current reading position
+    const char*  m_data{};   //!< Pointer to the data in memory
+    std::int64_t m_size{};   //!< Total size of the data
+    std::int64_t m_offset{}; //!< Current reading position
 };
 
 } // namespace sf

include/SFML/System/Time.hpp

@@ -119,7 +119,7 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    std::chrono::microseconds m_microseconds{0}; //!< Time value stored as microseconds
+    std::chrono::microseconds m_microseconds{}; //!< Time value stored as microseconds
 };
 
 ////////////////////////////////////////////////////////////

include/SFML/System/Vector2.hpp

@@ -209,8 +209,8 @@ public:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    T x{0}; //!< X coordinate of the vector
-    T y{0}; //!< Y coordinate of the vector
+    T x{}; //!< X coordinate of the vector
+    T y{}; //!< Y coordinate of the vector
 
 
     ////////////////////////////////////////////////////////////

include/SFML/System/Vector3.hpp

@@ -133,9 +133,9 @@ public:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    T x{0}; //!< X coordinate of the vector
-    T y{0}; //!< Y coordinate of the vector
-    T z{0}; //!< Z coordinate of the vector
+    T x{}; //!< X coordinate of the vector
+    T y{}; //!< Y coordinate of the vector
+    T z{}; //!< Z coordinate of the vector
 };
 
 ////////////////////////////////////////////////////////////

include/SFML/Window/Joystick.hpp

@@ -71,8 +71,8 @@ enum Axis
 struct SFML_WINDOW_API Identification
 {
     String       name{"No Joystick"}; //!< Name of the joystick
-    unsigned int vendorId{0};         //!< Manufacturer identifier
-    unsigned int productId{0};        //!< Product identifier
+    unsigned int vendorId{};          //!< Manufacturer identifier
+    unsigned int productId{};         //!< Product identifier
 };
 
 ////////////////////////////////////////////////////////////

include/SFML/Window/VideoMode.hpp

@@ -100,7 +100,7 @@ public:
     // Member data
     ////////////////////////////////////////////////////////////
     Vector2u     size;           //!< Video mode width and height, in pixels
-    unsigned int bitsPerPixel{0}; //!< Video mode pixel depth, in bits per pixels
+    unsigned int bitsPerPixel{}; //!< Video mode pixel depth, in bits per pixels
 };
 
 ////////////////////////////////////////////////////////////

src/SFML/Graphics/RenderTextureImplFBO.hpp

@@ -138,14 +138,14 @@ private:
     ////////////////////////////////////////////////////////////
     std::unordered_map<std::uint64_t, unsigned int> m_frameBuffers; //!< OpenGL frame buffer objects per context
     std::unordered_map<std::uint64_t, unsigned int> m_multisampleFrameBuffers; //!< Optional per-context OpenGL frame buffer objects with multisample attachments
-    unsigned int             m_depthStencilBuffer{0}; //!< Optional depth/stencil buffer attached to the frame buffer
-    unsigned int             m_colorBuffer{0};     //!< Optional multisample color buffer attached to the frame buffer
+    unsigned int             m_depthStencilBuffer{}; //!< Optional depth/stencil buffer attached to the frame buffer
+    unsigned int             m_colorBuffer{};        //!< Optional multisample color buffer attached to the frame buffer
     Vector2u                 m_size;                 //!< Width and height of the attachments
     std::unique_ptr<Context> m_context;              //!< Backup OpenGL context, used when none already exist
-    unsigned int             m_textureId{0};       //!< The ID of the texture to attach to the FBO
-    bool                     m_multisample{false}; //!< Whether we have to create a multisample frame buffer as well
-    bool                     m_stencil{false};     //!< Whether we have stencil attachment
-    bool                     m_sRgb{false};        //!< Whether we need to encode drawn pixels into sRGB color space
+    unsigned int             m_textureId{};          //!< The ID of the texture to attach to the FBO
+    bool                     m_multisample{};        //!< Whether we have to create a multisample frame buffer as well
+    bool                     m_stencil{};            //!< Whether we have stencil attachment
+    bool                     m_sRgb{};               //!< Whether we need to encode drawn pixels into sRGB color space
 };
 
 } // namespace priv

src/SFML/Graphics/Shader.cpp

@@ -225,7 +225,7 @@ struct Shader::UniformBinder
     UniformBinder& operator=(const UniformBinder&) = delete;
 
     TransientContextLock lock;           //!< Lock to keep context active while uniform is bound
-    GLEXT_GLhandle       savedProgram{0}; //!< Handle to the previously active program object
+    GLEXT_GLhandle       savedProgram{}; //!< Handle to the previously active program object
     GLEXT_GLhandle       currentProgram; //!< Handle to the program object of the modified sf::Shader instance
     GLint                location{-1};   //!< Uniform location, used by the surrounding sf::Shader code
 };

src/SFML/Window/Android/WindowImplAndroid.hpp

@@ -232,9 +232,9 @@ private:
     static int getUnicode(AInputEvent* event);
 
     Vector2u m_size;
-    bool     m_windowBeingCreated{false};
-    bool     m_windowBeingDestroyed{false};
-    bool     m_hasFocus{false};
+    bool     m_windowBeingCreated{};
+    bool     m_windowBeingDestroyed{};
+    bool     m_hasFocus{};
 };
 
 } // namespace priv

src/SFML/Window/DRM/DRMContext.cpp

@@ -272,7 +272,7 @@ int findDrmDevice(drmModeResPtr& resources)
 {
     static const int maxDrmDevices = 64;
 
-    drmDevicePtr devices[maxDrmDevices] = {nullptr};
+    drmDevicePtr devices[maxDrmDevices] = {};
 
     const int numDevices = drmGetDevices2(0, devices, maxDrmDevices);
     if (numDevices < 0)

src/SFML/Window/DRM/DRMContext.hpp

@@ -201,14 +201,14 @@ private:
     EGLDisplay m_display{EGL_NO_DISPLAY}; ///< The internal EGL display
     EGLContext m_context{EGL_NO_CONTEXT}; ///< The internal EGL context
     EGLSurface m_surface{EGL_NO_SURFACE}; ///< The internal EGL surface
-    EGLConfig  m_config{nullptr};         ///< The internal EGL config
+    EGLConfig  m_config{};                ///< The internal EGL config
 
-    gbm_bo*      m_currentBO{nullptr};
-    gbm_bo*      m_nextBO{nullptr};
-    gbm_surface* m_gbmSurface{nullptr};
+    gbm_bo*      m_currentBO{};
+    gbm_bo*      m_nextBO{};
+    gbm_surface* m_gbmSurface{};
     Vector2u     m_size;
-    bool         m_shown{false};
-    bool         m_scanOut{false};
+    bool         m_shown{};
+    bool         m_scanOut{};
 };
 
 } // namespace priv

src/SFML/Window/EglContext.hpp

@@ -190,7 +190,7 @@ private:
     EGLDisplay m_display{EGL_NO_DISPLAY}; //!< The internal EGL display
     EGLContext m_context{EGL_NO_CONTEXT}; //!< The internal EGL context
     EGLSurface m_surface{EGL_NO_SURFACE}; //!< The internal EGL surface
-    EGLConfig  m_config{nullptr};         //!< The internal EGL config
+    EGLConfig  m_config{};                //!< The internal EGL config
 };
 
 } // namespace priv

src/SFML/Window/JoystickImpl.hpp

@@ -42,7 +42,7 @@ namespace priv
 ////////////////////////////////////////////////////////////
 struct JoystickCaps
 {
-    unsigned int buttonCount{0};              //!< Number of buttons supported by the joystick
+    unsigned int buttonCount{};               //!< Number of buttons supported by the joystick
     bool         axes[Joystick::AxisCount]{}; //!< Support for each axis
 };
 
@@ -53,7 +53,7 @@ struct JoystickCaps
 ////////////////////////////////////////////////////////////
 struct JoystickState
 {
-    bool  connected{false};                 //!< Is the joystick currently connected?
+    bool  connected{};                      //!< Is the joystick currently connected?
     float axes[Joystick::AxisCount]{};      //!< Position of each axis, in range [-100, 100]
     bool  buttons[Joystick::ButtonCount]{}; //!< Status of each button (true = pressed)
 };

src/SFML/Window/OSX/HIDInputManager.hpp

@@ -220,9 +220,9 @@ private:
     // Member data
     ////////////////////////////////////////////////////////////
     bool              m_isValid{true}; ///< If any error occurs this variable is false
-    CFDataRef         m_layoutData{0};   ///< CFData containing the layout
-    UCKeyboardLayout* m_layout{nullptr}; ///< Current Keyboard Layout
-    IOHIDManagerRef   m_manager{0};      ///< HID Manager
+    CFDataRef         m_layoutData{};  ///< CFData containing the layout
+    UCKeyboardLayout* m_layout{};      ///< Current Keyboard Layout
+    IOHIDManagerRef   m_manager{};     ///< HID Manager
 
     IOHIDElements m_keys[Keyboard::KeyCount]; ///< All the keys on any connected keyboard
 

src/SFML/Window/OSX/HIDJoystickManager.hpp

@@ -122,8 +122,8 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    IOHIDManagerRef m_manager{0};       ///< HID Manager
-    unsigned int    m_joystickCount{0}; ///< Number of joysticks currently connected
+    IOHIDManagerRef m_manager{};       ///< HID Manager
+    unsigned int    m_joystickCount{}; ///< Number of joysticks currently connected
 };
 
 

src/SFML/Window/OSX/SFContext.hpp

@@ -155,9 +155,9 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    NSOpenGLContextRef m_context{0}; ///< OpenGL context.
-    NSOpenGLViewRef    m_view{0};    ///< Only for offscreen context.
-    NSWindowRef        m_window{0};  ///< Only for offscreen context.
+    NSOpenGLContextRef m_context{}; ///< OpenGL context.
+    NSOpenGLViewRef    m_view{};    ///< Only for offscreen context.
+    NSWindowRef        m_window{};  ///< Only for offscreen context.
 };
 
 } // namespace priv

src/SFML/Window/Unix/ClipboardImpl.hpp

@@ -135,7 +135,7 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    ::Window           m_window{0};               ///< X identifier defining our window
+    ::Window           m_window{};           ///< X identifier defining our window
     ::Display*         m_display;            ///< Pointer to the display
     Atom               m_clipboard;          ///< X Atom identifying the CLIPBOARD selection
     Atom               m_targets;            ///< X Atom identifying TARGETS
@@ -144,7 +144,7 @@ private:
     Atom               m_targetProperty;     ///< X Atom identifying our destination window property
     String             m_clipboardContents;  ///< Our clipboard contents
     std::deque<XEvent> m_events;             ///< Queue we use to store pending events for this window
-    bool               m_requestResponded{false}; ///< Holds whether our selection request has been responded to or not
+    bool               m_requestResponded{}; ///< Holds whether our selection request has been responded to or not
 };
 
 } // namespace priv

src/SFML/Window/Unix/GlxContext.hpp

@@ -175,11 +175,11 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    ::Display* m_display{nullptr};  ///< Connection to the X server
-    ::Window   m_window{0};         ///< Window to which the context is attached
-    GLXContext m_context{nullptr};  ///< OpenGL context
-    GLXPbuffer m_pbuffer{0};        ///< GLX pbuffer ID if one was created
-    bool       m_ownsWindow{false}; ///< Do we own the window associated to the context?
+    ::Display* m_display{};    ///< Connection to the X server
+    ::Window   m_window{};     ///< Window to which the context is attached
+    GLXContext m_context{};    ///< OpenGL context
+    GLXPbuffer m_pbuffer{};    ///< GLX pbuffer ID if one was created
+    bool       m_ownsWindow{}; ///< Do we own the window associated to the context?
 };
 
 } // namespace priv

src/SFML/Window/Unix/VulkanImplX11.cpp

@@ -90,11 +90,11 @@ struct VulkanLibraryWrapper
         return (entryPoint != nullptr);
     }
 
-    void* library{nullptr};
+    void* library{};
 
-    PFN_vkGetInstanceProcAddr                  vkGetInstanceProcAddr{nullptr};
-    PFN_vkEnumerateInstanceLayerProperties     vkEnumerateInstanceLayerProperties{nullptr};
-    PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties{nullptr};
+    PFN_vkGetInstanceProcAddr                  vkGetInstanceProcAddr{};
+    PFN_vkEnumerateInstanceLayerProperties     vkEnumerateInstanceLayerProperties{};
+    PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties{};
 };
 
 VulkanLibraryWrapper wrapper;

src/SFML/Window/Unix/WindowImplX11.hpp

@@ -296,25 +296,25 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    ::Window   m_window{0};             ///< X identifier defining our window
+    ::Window   m_window{};       ///< X identifier defining our window
     ::Display* m_display;        ///< Pointer to the display
     int        m_screen;         ///< Screen identifier
-    XIM        m_inputMethod{nullptr};  ///< Input method linked to the X display
-    XIC        m_inputContext{nullptr}; ///< Input context used to get unicode input in our window
+    XIM        m_inputMethod{};  ///< Input method linked to the X display
+    XIC        m_inputContext{}; ///< Input context used to get unicode input in our window
     bool       m_isExternal;     ///< Tell whether the window has been created externally or by SFML
-    RRMode     m_oldVideoMode{0};       ///< Video mode in use before we switch to fullscreen
-    RRCrtc     m_oldRRCrtc{0};          ///< RRCrtc in use before we switch to fullscreen
-    ::Cursor   m_hiddenCursor{0};       ///< As X11 doesn't provide cursor hiding, we must create a transparent one
+    RRMode     m_oldVideoMode{}; ///< Video mode in use before we switch to fullscreen
+    RRCrtc     m_oldRRCrtc{};    ///< RRCrtc in use before we switch to fullscreen
+    ::Cursor   m_hiddenCursor{}; ///< As X11 doesn't provide cursor hiding, we must create a transparent one
     ::Cursor m_lastCursor{None}; ///< Last cursor used -- this data is not owned by the window and is required to be always valid
     bool     m_keyRepeat{true}; ///< Is the KeyRepeat feature enabled?
     Vector2i m_previousSize{-1, -1}; ///< Previous size of the window, to find if a ConfigureNotify event is a resize event (could be a move event only)
-    bool     m_useSizeHints{false};  ///< Is the size of the window fixed with size hints?
-    bool     m_fullscreen{false};    ///< Is the window in fullscreen?
-    bool     m_cursorGrabbed{false}; ///< Is the mouse cursor trapped?
-    bool     m_windowMapped{false};  ///< Has the window been mapped by the window manager?
-    Pixmap   m_iconPixmap{0};        ///< The current icon pixmap if in use
-    Pixmap   m_iconMaskPixmap{0};    ///< The current icon mask pixmap if in use
-    ::Time   m_lastInputTime{0};     ///< Last time we received user input
+    bool     m_useSizeHints{};   ///< Is the size of the window fixed with size hints?
+    bool     m_fullscreen{};     ///< Is the window in fullscreen?
+    bool     m_cursorGrabbed{};  ///< Is the mouse cursor trapped?
+    bool     m_windowMapped{};   ///< Has the window been mapped by the window manager?
+    Pixmap   m_iconPixmap{};     ///< The current icon pixmap if in use
+    Pixmap   m_iconMaskPixmap{}; ///< The current icon mask pixmap if in use
+    ::Time   m_lastInputTime{};  ///< Last time we received user input
 };
 
 } // namespace priv

src/SFML/Window/Win32/CursorImpl.hpp

@@ -98,8 +98,8 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    void* m_cursor{nullptr}; // Type erasure via `void*` is used here to avoid depending on `windows.h`
-    bool  m_systemCursor{false};
+    void* m_cursor{}; // Type erasure via `void*` is used here to avoid depending on `windows.h`
+    bool  m_systemCursor{};
 };
 
 } // namespace priv

src/SFML/Window/Win32/JoystickImpl.cpp

@@ -103,7 +103,7 @@ namespace
 {
 struct ConnectionCache
 {
-    bool      connected{false};
+    bool      connected{};
     sf::Clock timer;
 };
 const sf::Time connectionRefreshDelay = sf::milliseconds(500);

src/SFML/Window/Win32/VulkanImplWin32.cpp

@@ -89,11 +89,11 @@ struct VulkanLibraryWrapper
         return (entryPoint != nullptr);
     }
 
-    HMODULE library{nullptr};
+    HMODULE library{};
 
-    PFN_vkGetInstanceProcAddr                  vkGetInstanceProcAddr{nullptr};
-    PFN_vkEnumerateInstanceLayerProperties     vkEnumerateInstanceLayerProperties{nullptr};
-    PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties{nullptr};
+    PFN_vkGetInstanceProcAddr                  vkGetInstanceProcAddr{};
+    PFN_vkEnumerateInstanceLayerProperties     vkEnumerateInstanceLayerProperties{};
+    PFN_vkEnumerateInstanceExtensionProperties vkEnumerateInstanceExtensionProperties{};
 };
 
 VulkanLibraryWrapper wrapper;

src/SFML/Window/Win32/WglContext.hpp

@@ -178,11 +178,11 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    HWND        m_window{nullptr};        //!< Window to which the context is attached
-    HPBUFFERARB m_pbuffer{nullptr};       //!< Handle to a pbuffer if one was created
-    HDC         m_deviceContext{nullptr}; //!< Device context associated to the context
-    HGLRC       m_context{nullptr};       //!< OpenGL context
-    bool        m_ownsWindow{false};      //!< Do we own the target window?
+    HWND        m_window{};        //!< Window to which the context is attached
+    HPBUFFERARB m_pbuffer{};       //!< Handle to a pbuffer if one was created
+    HDC         m_deviceContext{}; //!< Device context associated to the context
+    HGLRC       m_context{};       //!< OpenGL context
+    bool        m_ownsWindow{};    //!< Do we own the target window?
 };
 
 } // namespace priv

src/SFML/Window/Win32/WindowImplWin32.hpp

@@ -268,19 +268,19 @@ private:
     ////////////////////////////////////////////////////////////
     // Member data
     ////////////////////////////////////////////////////////////
-    HWND     m_handle{nullptr};     //!< Win32 handle of the window
-    LONG_PTR m_callback{0};         //!< Stores the original event callback function of the control
+    HWND     m_handle{};            //!< Win32 handle of the window
+    LONG_PTR m_callback{};          //!< Stores the original event callback function of the control
     bool     m_cursorVisible{true}; //!< Is the cursor visible or hidden?
     HCURSOR  m_lastCursor{
         LoadCursor(nullptr, IDC_ARROW)}; //!< Last cursor used -- this data is not owned by the window and is required to be always valid
-    HICON    m_icon{nullptr};          //!< Custom icon assigned to the window
+    HICON    m_icon{};                    //!< Custom icon assigned to the window
     bool     m_keyRepeatEnabled{true}; //!< Automatic key-repeat state for keydown events
     Vector2u m_lastSize;               //!< The last handled size of the window
-    bool     m_resizing{false};        //!< Is the window being resized?
-    std::uint16_t m_surrogate{0}; //!< First half of the surrogate pair, in case we're receiving a Unicode character in two events
-    bool m_mouseInside{false};   //!< Mouse is inside the window?
-    bool m_fullscreen{false};    //!< Is the window fullscreen?
-    bool m_cursorGrabbed{false}; //!< Is the mouse cursor trapped?
+    bool     m_resizing{};             //!< Is the window being resized?
+    std::uint16_t m_surrogate{}; //!< First half of the surrogate pair, in case we're receiving a Unicode character in two events
+    bool          m_mouseInside{};   //!< Mouse is inside the window?
+    bool          m_fullscreen{};    //!< Is the window fullscreen?
+    bool          m_cursorGrabbed{}; //!< Is the mouse cursor trapped?
 };
 
 } // namespace priv

src/SFML/Window/iOS/EaglContext.hpp

@@ -159,10 +159,10 @@ private:
     // Member data
     ////////////////////////////////////////////////////////////
     EAGLContext* m_context;        ///< The internal context
-    GLuint       m_framebuffer{0};      ///< Frame buffer associated to the context
-    GLuint       m_colorbuffer{0};      ///< Color render buffer
-    GLuint       m_depthbuffer{0};      ///< Depth render buffer
-    bool         m_vsyncEnabled{false}; ///< Vertical sync activation flag
+    GLuint       m_framebuffer{};  ///< Frame buffer associated to the context
+    GLuint       m_colorbuffer{};  ///< Color render buffer
+    GLuint       m_depthbuffer{};  ///< Depth render buffer
+    bool         m_vsyncEnabled{}; ///< Vertical sync activation flag
     Clock        m_clock;          ///< Measures the elapsed time for the fake v-sync implementation
 };